I'm not sure there's much blame to throw around for injuries. The first actual padded practice was yesterday and it sounds like the majority of injuries to this point have been non-contact freak injuries (Young, Gillmore, Dixon) and that's usually what happens when people tear knee ligaments. Its usually more a result of a bad step or landing wrong than a result of a hard hit or something like that. Theres not really any kind of training or conditioning to lessen the risk of a torn ligament.
I'm not too sure about what happened to Canady. All I've seen is the Ravens saying he had an undisclosed injury. None of the reporters saw him go down in practice or anything, but Zrebiec seems to think it might be a serious knee injury- which is concerning because Zrebiec has been a solid reporter as long as I've followed him, so he definitely could know something we don't.